java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:29:02,949 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:29:02,952 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:29:02,973 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:29:02,974 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:29:02,975 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:29:02,979 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:29:02,982 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:29:02,983 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:29:02,985 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:29:02,987 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:29:02,987 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:29:02,988 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:29:02,989 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:29:02,998 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:29:02,999 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:29:03,000 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:29:03,002 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:29:03,008 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:29:03,011 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:29:03,012 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:29:03,013 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:29:03,018 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:29:03,019 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:29:03,019 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:29:03,020 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:29:03,024 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:29:03,025 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:29:03,026 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:29:03,027 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:29:03,027 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:29:03,027 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:29:03,029 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:29:03,030 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:29:03,031 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:29:03,032 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:29:03,032 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:29:03,059 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:29:03,059 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:29:03,060 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:29:03,060 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:29:03,061 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:29:03,061 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:29:03,061 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:29:03,061 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:29:03,061 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:29:03,062 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:29:03,062 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:29:03,062 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:29:03,066 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:29:03,066 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:29:03,066 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:29:03,067 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:29:03,067 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:29:03,067 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:29:03,067 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:29:03,067 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:29:03,068 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:29:03,068 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:29:03,068 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:29:03,068 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:29:03,068 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:29:03,070 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:29:03,071 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:29:03,071 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:29:03,071 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:29:03,071 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:29:03,071 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:29:03,072 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:29:03,072 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:29:03,072 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:29:03,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:29:03,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:29:03,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:29:03,175 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:29:03,176 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:29:03,176 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-11-07 15:29:03,237 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba1679ba/f650382d174a4fd5b09291b0c7e67475/FLAG7760b6a12 [2018-11-07 15:29:03,899 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:29:03,900 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-11-07 15:29:03,929 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba1679ba/f650382d174a4fd5b09291b0c7e67475/FLAG7760b6a12 [2018-11-07 15:29:03,950 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba1679ba/f650382d174a4fd5b09291b0c7e67475 [2018-11-07 15:29:03,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:29:03,968 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:29:03,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:29:03,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:29:03,973 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:29:03,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:29:03" (1/1) ... [2018-11-07 15:29:03,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:03, skipping insertion in model container [2018-11-07 15:29:03,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:29:03" (1/1) ... [2018-11-07 15:29:03,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:29:04,128 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:29:05,138 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:29:05,143 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:29:05,562 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:29:05,585 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:29:05,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05 WrapperNode [2018-11-07 15:29:05,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:29:05,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:29:05,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:29:05,587 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:29:05,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05" (1/1) ... [2018-11-07 15:29:05,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05" (1/1) ... [2018-11-07 15:29:05,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:29:05,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:29:05,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:29:05,847 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:29:05,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05" (1/1) ... [2018-11-07 15:29:05,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05" (1/1) ... [2018-11-07 15:29:05,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05" (1/1) ... [2018-11-07 15:29:05,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05" (1/1) ... [2018-11-07 15:29:05,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05" (1/1) ... [2018-11-07 15:29:06,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05" (1/1) ... [2018-11-07 15:29:06,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05" (1/1) ... [2018-11-07 15:29:06,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:29:06,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:29:06,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:29:06,093 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:29:06,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:29:06,169 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:29:06,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:29:06,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:29:06,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:29:06,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:29:06,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:29:06,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:29:06,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:29:06,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:29:06,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:29:06,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:29:14,862 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:29:14,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:29:14 BoogieIcfgContainer [2018-11-07 15:29:14,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:29:14,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:29:14,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:29:14,870 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:29:14,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:29:03" (1/3) ... [2018-11-07 15:29:14,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262e0c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:29:14, skipping insertion in model container [2018-11-07 15:29:14,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:29:05" (2/3) ... [2018-11-07 15:29:14,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262e0c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:29:14, skipping insertion in model container [2018-11-07 15:29:14,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:29:14" (3/3) ... [2018-11-07 15:29:14,874 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label11_true-unreach-call.c [2018-11-07 15:29:14,885 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:29:14,895 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:29:14,913 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:29:14,965 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:29:14,965 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:29:14,966 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:29:14,966 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:29:14,966 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:29:14,966 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:29:14,966 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:29:14,967 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:29:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 15:29:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-07 15:29:15,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:29:15,041 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:29:15,044 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:29:15,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:15,049 INFO L82 PathProgramCache]: Analyzing trace with hash -492133930, now seen corresponding path program 1 times [2018-11-07 15:29:15,052 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:29:15,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:15,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:15,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:15,107 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:29:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:29:15,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:29:15,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:29:15,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:29:15,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:29:15,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:29:15,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:29:15,712 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 15:29:24,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:29:24,032 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-11-07 15:29:24,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:29:24,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-11-07 15:29:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:29:24,089 INFO L225 Difference]: With dead ends: 2164 [2018-11-07 15:29:24,089 INFO L226 Difference]: Without dead ends: 1554 [2018-11-07 15:29:24,105 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:29:24,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-11-07 15:29:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-11-07 15:29:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-11-07 15:29:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-11-07 15:29:24,292 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 63 [2018-11-07 15:29:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:29:24,294 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-11-07 15:29:24,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:29:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-11-07 15:29:24,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 15:29:24,310 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:29:24,310 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:29:24,311 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:29:24,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1696460921, now seen corresponding path program 1 times [2018-11-07 15:29:24,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:29:24,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:24,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:24,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:24,314 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:29:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:29:24,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:29:24,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:29:24,563 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:29:24,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:29:24,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:29:24,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:29:24,566 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-11-07 15:29:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:29:31,013 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-11-07 15:29:31,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:29:31,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-11-07 15:29:31,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:29:31,042 INFO L225 Difference]: With dead ends: 3031 [2018-11-07 15:29:31,043 INFO L226 Difference]: Without dead ends: 1985 [2018-11-07 15:29:31,048 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:29:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-11-07 15:29:31,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-11-07 15:29:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-07 15:29:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-11-07 15:29:31,134 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 135 [2018-11-07 15:29:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:29:31,137 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-11-07 15:29:31,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:29:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-11-07 15:29:31,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 15:29:31,145 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:29:31,145 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:29:31,146 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:29:31,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:31,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1297606689, now seen corresponding path program 1 times [2018-11-07 15:29:31,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:29:31,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:31,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:31,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:31,152 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:29:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:29:31,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:29:31,542 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:29:31,543 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 139 with the following transitions: [2018-11-07 15:29:31,545 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:29:31,610 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:29:31,611 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:29:32,104 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:29:33,525 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:29:33,527 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 15:29:33,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:33,572 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:29:33,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:29:33,573 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:29:33,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:33,594 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:29:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:33,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:29:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:29:38,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:29:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:29:38,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 15:29:38,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-11-07 15:29:38,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:29:38,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:29:38,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:29:38,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-11-07 15:29:38,754 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 3 states. [2018-11-07 15:29:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:29:45,120 INFO L93 Difference]: Finished difference Result 5693 states and 9655 transitions. [2018-11-07 15:29:45,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:29:45,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2018-11-07 15:29:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:29:45,151 INFO L225 Difference]: With dead ends: 5693 [2018-11-07 15:29:45,151 INFO L226 Difference]: Without dead ends: 3740 [2018-11-07 15:29:45,165 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 272 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-11-07 15:29:45,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2018-11-07 15:29:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3734. [2018-11-07 15:29:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3734 states. [2018-11-07 15:29:45,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 6077 transitions. [2018-11-07 15:29:45,293 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 6077 transitions. Word has length 138 [2018-11-07 15:29:45,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:29:45,294 INFO L480 AbstractCegarLoop]: Abstraction has 3734 states and 6077 transitions. [2018-11-07 15:29:45,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:29:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 6077 transitions. [2018-11-07 15:29:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-11-07 15:29:45,302 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:29:45,305 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:29:45,306 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:29:45,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:45,306 INFO L82 PathProgramCache]: Analyzing trace with hash -291330969, now seen corresponding path program 1 times [2018-11-07 15:29:45,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:29:45,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:45,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:45,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:45,308 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:29:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:45,662 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:29:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 113 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 15:29:45,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:29:45,740 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:29:45,740 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 236 with the following transitions: [2018-11-07 15:29:45,740 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1310], [1315], [1317], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:29:45,745 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:29:45,746 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:29:45,828 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:29:47,102 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:29:47,102 INFO L272 AbstractInterpreter]: Visited 104 different actions 298 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 15:29:47,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:47,141 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:29:47,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:29:47,141 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:29:47,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:47,156 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:29:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:47,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:29:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:29:47,639 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:29:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:29:48,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 15:29:48,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 15:29:48,335 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 15:29:48,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 15:29:48,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 15:29:48,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 15:29:48,338 INFO L87 Difference]: Start difference. First operand 3734 states and 6077 transitions. Second operand 9 states. [2018-11-07 15:29:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:29:54,888 INFO L93 Difference]: Finished difference Result 9302 states and 15012 transitions. [2018-11-07 15:29:54,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 15:29:54,889 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2018-11-07 15:29:54,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:29:54,912 INFO L225 Difference]: With dead ends: 9302 [2018-11-07 15:29:54,912 INFO L226 Difference]: Without dead ends: 4595 [2018-11-07 15:29:54,939 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 468 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-07 15:29:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2018-11-07 15:29:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 4560. [2018-11-07 15:29:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2018-11-07 15:29:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 5524 transitions. [2018-11-07 15:29:55,086 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 5524 transitions. Word has length 235 [2018-11-07 15:29:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:29:55,086 INFO L480 AbstractCegarLoop]: Abstraction has 4560 states and 5524 transitions. [2018-11-07 15:29:55,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 15:29:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 5524 transitions. [2018-11-07 15:29:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-11-07 15:29:55,094 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:29:55,094 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:29:55,094 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:29:55,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:55,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1705786468, now seen corresponding path program 1 times [2018-11-07 15:29:55,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:29:55,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:55,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:55,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:29:55,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:29:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 170 proven. 19 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2018-11-07 15:29:55,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:29:55,646 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:29:55,646 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 334 with the following transitions: [2018-11-07 15:29:55,646 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:29:55,652 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:29:55,652 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:29:55,732 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:29:57,079 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:29:57,079 INFO L272 AbstractInterpreter]: Visited 120 different actions 346 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 15:29:57,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:29:57,116 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:29:57,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:29:57,116 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:29:57,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:29:57,129 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:29:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:29:57,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:29:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-11-07 15:29:58,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:29:58,980 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 15:29:59,103 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-11-07 15:29:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 174 proven. 221 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:29:59,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 15:29:59,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2018-11-07 15:29:59,904 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 15:29:59,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 15:29:59,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 15:29:59,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-11-07 15:29:59,906 INFO L87 Difference]: Start difference. First operand 4560 states and 5524 transitions. Second operand 15 states. [2018-11-07 15:30:27,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:30:27,077 INFO L93 Difference]: Finished difference Result 28510 states and 37309 transitions. [2018-11-07 15:30:27,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-11-07 15:30:27,081 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 333 [2018-11-07 15:30:27,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:30:27,216 INFO L225 Difference]: With dead ends: 28510 [2018-11-07 15:30:27,216 INFO L226 Difference]: Without dead ends: 23062 [2018-11-07 15:30:27,277 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=849, Invalid=3843, Unknown=0, NotChecked=0, Total=4692 [2018-11-07 15:30:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23062 states. [2018-11-07 15:30:27,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23062 to 21917. [2018-11-07 15:30:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21917 states. [2018-11-07 15:30:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21917 states to 21917 states and 26216 transitions. [2018-11-07 15:30:27,888 INFO L78 Accepts]: Start accepts. Automaton has 21917 states and 26216 transitions. Word has length 333 [2018-11-07 15:30:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:30:27,889 INFO L480 AbstractCegarLoop]: Abstraction has 21917 states and 26216 transitions. [2018-11-07 15:30:27,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 15:30:27,889 INFO L276 IsEmpty]: Start isEmpty. Operand 21917 states and 26216 transitions. [2018-11-07 15:30:27,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-11-07 15:30:27,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:30:27,908 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:30:27,908 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:30:27,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:30:27,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1877965642, now seen corresponding path program 1 times [2018-11-07 15:30:27,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:30:27,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:30:27,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:30:27,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:30:27,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:30:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:30:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:30:28,798 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:30:28,798 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:30:28,799 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 412 with the following transitions: [2018-11-07 15:30:28,800 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:30:28,810 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:30:28,810 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:30:29,178 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:30:32,336 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:30:32,336 INFO L272 AbstractInterpreter]: Visited 356 different actions 2105 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 15:30:32,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:30:32,375 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:30:32,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:30:32,375 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:30:32,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:30:32,390 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:30:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:30:32,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:30:34,770 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 38 [2018-11-07 15:30:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:30:34,931 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:30:35,212 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 36 [2018-11-07 15:30:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:30:37,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 15:30:37,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-11-07 15:30:37,496 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:30:37,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:30:37,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:30:37,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 15:30:37,497 INFO L87 Difference]: Start difference. First operand 21917 states and 26216 transitions. Second operand 6 states. [2018-11-07 15:30:46,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:30:46,164 INFO L93 Difference]: Finished difference Result 52128 states and 62569 transitions. [2018-11-07 15:30:46,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:30:46,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 411 [2018-11-07 15:30:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:30:46,271 INFO L225 Difference]: With dead ends: 52128 [2018-11-07 15:30:46,272 INFO L226 Difference]: Without dead ends: 30657 [2018-11-07 15:30:46,317 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 816 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-11-07 15:30:46,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30657 states. [2018-11-07 15:30:46,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30657 to 29755. [2018-11-07 15:30:46,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29755 states. [2018-11-07 15:30:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29755 states to 29755 states and 35444 transitions. [2018-11-07 15:30:47,024 INFO L78 Accepts]: Start accepts. Automaton has 29755 states and 35444 transitions. Word has length 411 [2018-11-07 15:30:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:30:47,025 INFO L480 AbstractCegarLoop]: Abstraction has 29755 states and 35444 transitions. [2018-11-07 15:30:47,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:30:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 29755 states and 35444 transitions. [2018-11-07 15:30:47,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-11-07 15:30:47,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:30:47,049 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:30:47,049 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:30:47,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:30:47,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1258249865, now seen corresponding path program 1 times [2018-11-07 15:30:47,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:30:47,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:30:47,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:30:47,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:30:47,051 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:30:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:30:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2018-11-07 15:30:47,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:30:47,824 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:30:47,824 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 468 with the following transitions: [2018-11-07 15:30:47,824 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1376], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1508], [1511], [1515], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:30:47,828 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:30:47,828 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:30:47,934 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:30:48,895 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:30:48,895 INFO L272 AbstractInterpreter]: Visited 145 different actions 571 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 15:30:48,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:30:48,935 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:30:48,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:30:48,935 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:30:48,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:30:48,952 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:30:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:30:49,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:30:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2018-11-07 15:30:49,359 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:30:49,685 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 246 proven. 8 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-11-07 15:30:49,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 15:30:49,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-11-07 15:30:49,720 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:30:49,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:30:49,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:30:49,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:30:49,722 INFO L87 Difference]: Start difference. First operand 29755 states and 35444 transitions. Second operand 3 states. [2018-11-07 15:30:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:30:51,476 INFO L93 Difference]: Finished difference Result 57706 states and 68857 transitions. [2018-11-07 15:30:51,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:30:51,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 467 [2018-11-07 15:30:51,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:30:51,572 INFO L225 Difference]: With dead ends: 57706 [2018-11-07 15:30:51,573 INFO L226 Difference]: Without dead ends: 28395 [2018-11-07 15:30:51,626 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 930 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:30:51,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28395 states. [2018-11-07 15:30:52,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28395 to 28391. [2018-11-07 15:30:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28391 states. [2018-11-07 15:30:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28391 states to 28391 states and 33679 transitions. [2018-11-07 15:30:52,158 INFO L78 Accepts]: Start accepts. Automaton has 28391 states and 33679 transitions. Word has length 467 [2018-11-07 15:30:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:30:52,158 INFO L480 AbstractCegarLoop]: Abstraction has 28391 states and 33679 transitions. [2018-11-07 15:30:52,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:30:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 28391 states and 33679 transitions. [2018-11-07 15:30:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2018-11-07 15:30:52,191 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:30:52,192 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:30:52,192 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:30:52,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:30:52,193 INFO L82 PathProgramCache]: Analyzing trace with hash -404401180, now seen corresponding path program 1 times [2018-11-07 15:30:52,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:30:52,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:30:52,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:30:52,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:30:52,194 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:30:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:30:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 166 proven. 180 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-11-07 15:30:53,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:30:53,133 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:30:53,134 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 488 with the following transitions: [2018-11-07 15:30:53,134 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1658], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1723], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:30:53,138 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:30:53,138 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:30:53,190 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:30:55,255 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:30:55,255 INFO L272 AbstractInterpreter]: Visited 185 different actions 1288 times. Merged at 8 different actions 62 times. Widened at 1 different actions 3 times. Found 11 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 15:30:55,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:30:55,285 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:30:55,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:30:55,285 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:30:55,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:30:55,304 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:30:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:30:55,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:30:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 15:30:56,227 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:30:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 15:30:56,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 15:30:56,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2018-11-07 15:30:56,563 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 15:30:56,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 15:30:56,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 15:30:56,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-11-07 15:30:56,566 INFO L87 Difference]: Start difference. First operand 28391 states and 33679 transitions. Second operand 12 states. [2018-11-07 15:30:58,683 WARN L179 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 15:31:15,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:31:15,302 INFO L93 Difference]: Finished difference Result 76081 states and 91925 transitions. [2018-11-07 15:31:15,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-07 15:31:15,302 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 487 [2018-11-07 15:31:15,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:31:15,419 INFO L225 Difference]: With dead ends: 76081 [2018-11-07 15:31:15,419 INFO L226 Difference]: Without dead ends: 48137 [2018-11-07 15:31:15,488 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1006 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=611, Invalid=2695, Unknown=0, NotChecked=0, Total=3306 [2018-11-07 15:31:15,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48137 states. [2018-11-07 15:31:16,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48137 to 45935. [2018-11-07 15:31:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45935 states. [2018-11-07 15:31:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45935 states to 45935 states and 54056 transitions. [2018-11-07 15:31:16,381 INFO L78 Accepts]: Start accepts. Automaton has 45935 states and 54056 transitions. Word has length 487 [2018-11-07 15:31:16,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:31:16,382 INFO L480 AbstractCegarLoop]: Abstraction has 45935 states and 54056 transitions. [2018-11-07 15:31:16,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 15:31:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 45935 states and 54056 transitions. [2018-11-07 15:31:16,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-11-07 15:31:16,426 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:31:16,427 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:31:16,427 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:31:16,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:31:16,428 INFO L82 PathProgramCache]: Analyzing trace with hash -73523263, now seen corresponding path program 1 times [2018-11-07 15:31:16,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:31:16,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:31:16,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:31:16,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:31:16,430 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:31:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:31:17,793 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 15:31:18,009 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 15:31:18,460 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-11-07 15:31:19,001 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2018-11-07 15:31:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 237 proven. 462 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 15:31:20,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:31:20,050 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:31:20,050 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 566 with the following transitions: [2018-11-07 15:31:20,050 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1681], [1686], [1688], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1725], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:31:20,054 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:31:20,054 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:31:20,147 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:31:23,353 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:31:23,354 INFO L272 AbstractInterpreter]: Visited 187 different actions 735 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 15:31:23,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:31:23,392 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:31:23,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:31:23,392 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:31:23,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:31:23,406 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:31:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:31:23,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:31:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 540 proven. 55 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-11-07 15:31:24,827 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:31:25,554 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-11-07 15:31:25,656 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 108 [2018-11-07 15:31:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 239 proven. 460 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 15:31:27,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 15:31:27,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 30 [2018-11-07 15:31:27,841 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 15:31:27,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 15:31:27,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 15:31:27,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2018-11-07 15:31:27,844 INFO L87 Difference]: Start difference. First operand 45935 states and 54056 transitions. Second operand 22 states. [2018-11-07 15:31:30,861 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-11-07 15:31:32,661 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2018-11-07 15:31:36,519 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2018-11-07 15:31:42,299 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2018-11-07 15:31:43,418 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-11-07 15:31:44,077 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-11-07 15:31:44,964 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-11-07 15:31:45,987 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2018-11-07 15:31:46,729 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-11-07 15:31:47,079 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2018-11-07 15:31:48,759 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2018-11-07 15:31:50,834 WARN L179 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 30 [2018-11-07 15:31:57,824 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2018-11-07 15:31:59,678 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-11-07 15:32:02,841 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-11-07 15:32:04,755 WARN L179 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2018-11-07 15:32:11,509 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2018-11-07 15:32:11,869 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-11-07 15:32:12,784 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 46 [2018-11-07 15:32:13,795 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2018-11-07 15:32:17,852 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-11-07 15:32:35,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:32:35,056 INFO L93 Difference]: Finished difference Result 161650 states and 210911 transitions. [2018-11-07 15:32:35,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-11-07 15:32:35,057 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 565 [2018-11-07 15:32:35,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:32:35,741 INFO L225 Difference]: With dead ends: 161650 [2018-11-07 15:32:35,741 INFO L226 Difference]: Without dead ends: 109265 [2018-11-07 15:32:35,957 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1405 GetRequests, 1220 SyntacticMatches, 5 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12327 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=5239, Invalid=27703, Unknown=0, NotChecked=0, Total=32942 [2018-11-07 15:32:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109265 states. [2018-11-07 15:32:38,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109265 to 100432. [2018-11-07 15:32:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100432 states. [2018-11-07 15:32:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100432 states to 100432 states and 123766 transitions. [2018-11-07 15:32:39,718 INFO L78 Accepts]: Start accepts. Automaton has 100432 states and 123766 transitions. Word has length 565 [2018-11-07 15:32:39,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:32:39,719 INFO L480 AbstractCegarLoop]: Abstraction has 100432 states and 123766 transitions. [2018-11-07 15:32:39,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 15:32:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 100432 states and 123766 transitions. [2018-11-07 15:32:39,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2018-11-07 15:32:39,770 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:32:39,771 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:32:39,771 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:32:39,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:32:39,773 INFO L82 PathProgramCache]: Analyzing trace with hash -735551284, now seen corresponding path program 1 times [2018-11-07 15:32:39,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:32:39,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:32:39,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:32:39,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:32:39,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:32:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:32:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 604 proven. 71 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2018-11-07 15:32:40,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:32:40,367 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:32:40,367 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 608 with the following transitions: [2018-11-07 15:32:40,368 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1681], [1686], [1688], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:32:40,371 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:32:40,371 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:32:40,416 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 15:32:42,262 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 15:32:42,262 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 15:32:42,263 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 15:32:42,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:32:42,263 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:32:42,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:32:42,272 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:32:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:32:42,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:32:42,452 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 15:32:42,653 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:32:42,654 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 15:32:42,659 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 15:32:42,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:32:42 BoogieIcfgContainer [2018-11-07 15:32:42,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 15:32:42,661 INFO L168 Benchmark]: Toolchain (without parser) took 218693.91 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 216.0 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 15:32:42,661 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 15:32:42,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1617.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 15:32:42,662 INFO L168 Benchmark]: Boogie Procedure Inliner took 259.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -944.3 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-11-07 15:32:42,664 INFO L168 Benchmark]: Boogie Preprocessor took 245.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 15:32:42,665 INFO L168 Benchmark]: RCFGBuilder took 8772.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 448.9 MB). Peak memory consumption was 448.9 MB. Max. memory is 7.1 GB. [2018-11-07 15:32:42,665 INFO L168 Benchmark]: TraceAbstraction took 207793.93 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 1.2 GB in the end (delta: 560.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 15:32:42,670 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1617.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 259.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -944.3 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 245.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8772.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 448.9 MB). Peak memory consumption was 448.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207793.93 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 1.2 GB in the end (delta: 560.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 176]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 176). Cancelled while BasicCegarLoop was analyzing trace of length 608 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 207.7s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 153.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2408 SDtfs, 44936 SDslu, 4984 SDs, 0 SdLazy, 80323 SolverSat, 12930 SolverUnsat, 258 SolverUnknown, 0 SolverNotchecked, 111.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5752 GetRequests, 5376 SyntacticMatches, 24 SemanticMatches, 352 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14763 ImplicationChecksByTransitivity, 32.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100432occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.9s AbstIntTime, 8 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 13655 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 24.7s InterpolantComputationTime, 5470 NumberOfCodeBlocks, 5470 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8083 ConstructedInterpolants, 611 QuantifiedInterpolants, 24181625 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4155 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 6543/8183 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown